Natronorarus salvus gen. nov., sp. nov., Halalkalicoccus ordinarius sp. nov., and Halalkalicoccus salilacus sp. nov., halophilic archaea from a soda lake and two saline lakes, and proposal to classify the genera Halalkalicoccus and Natronorarus into Halalkalicoccaceae fam. nov. in the order Halobacteriales within the class Halobacteria.

Four novel halophilic archaeal strains CGA53, CG83, FCH27, and SEDH24 were isolated from a soda lake and two saline lakes in China, respectively. Strain CGA53 showed the highest 16S rRNA gene similarity (92.6%) to Salinilacihabitans rarus AD-4, and the other three strains were found to be related to Halalkalicoccus species with similarities of 97.

Natronorubrum halophilum sp. nov. isolated from two inland salt lakes.

Two halophilic archaeal strains, SHR37 and NEN6, were isolated from salt lakes located in the Tibet and Xinjiang regions of China. The two strains were found to form a single cluster (99.9% and 99.

sp. nov., isolated from marine solar salterns.

Three halophilic archaeal strains, YJ-53, ZS-5 and DYF38, were isolated from marine solar salterns located in different provinces of China. The three strains formed a single cluster (99.7-99.